Cisco Systems 4948 Series Manual De Usuario
© 2006 Cisco Systems, Inc. All rights reserved.
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Port Aggregation Protocol (PAgP)
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Unidirectional Link Detection Protocol (UDLD) and aggressive UDLD on the SFP ports
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Q-in-Q in hardware
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Layer 2 protocol tunneling
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Jumbo frames on all ports (up to 9216 bytes)
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Baby giants (up to 1600 bytes)
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Hardware-based storm control (formally known as broadcast and multicast suppression)
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Community private VLANs (PVLANs)
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Forced 10/100 autonegotiation
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Web Content Communication Protocol Version 2 Layer 2 Redirect
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Private VLAN Promiscuous Trunk
Layer 3 Features
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Hardware-based IP Cisco Express Forwarding routing at 72 Mpps
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Static IP routing
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IP routing protocols: EIGRP, OSPF, RIP, RIP2
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BGPv4 and Multicast Border Gateway Protocol (MBGP)
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Hot Standby Router Protocol (HSRP)
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Software routing of IPX and AppleTalk
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IS-IS routing protocol
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IGMPv1, v2, and v3
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IGMP filtering on access and trunk ports
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IP Multicast routing protocols (Protocol Independent Multicast [PIM], Source Specific Multicast [S SM], and Distance Vector
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Multicast Routing Protocol [DVMRP])
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Pragmatic General Multicast (PGM)
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Cisco Group Management Protocol (GMP) server
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Full Internet Control Message Protocol (ICMP) support
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ICMP Router Discovery Protocol
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Policy-based routing (PBR)
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Virtual Route Forwarding-lite (VRF-lite)
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IPv6 software switching support
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OSPF fast convergence
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EIGRP stub
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Virtual Router Redundancy Protocol (VRRP)
Sophisticated QoS and Traffic Management
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Per-port QoS configuration
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Per-port per VLAN QoS
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Support for four queues per port in hardware
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Strict priority queuing
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IP differentiated services code point (DSCP) and IP Precedence
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Classification and marking based on IP type of service (ToS) or DSCP
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Classification and marking based on full Layer 3 and 4 headers (IP only)
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Input and output policing based on Layer 3 and 4 headers (IP only)